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Author SHA1 Message Date
Bartosz Sławecki
5a2d2736a6
gh-150052: Resolve un-loaded lazily loaded submodules via module.__getattr__ instead of publishing lazy values (#150055) (#150744) 2026-06-02 09:58:51 +01:00
Mark Shannon
633b6be8f5
GH-148960: Reduce the size of the debug stencils to less than half. (GH-150551) 
For AArch64 linux, reduces the total bytes in the code bodies from 489kb to 218kb.
Reduces the size of the stencils files from 394k lines to 167k lines.
 2026-06-01 17:56:16 +01:00
Bartosz Sławecki
1d4e965829
gh-148587: Make sys.lazy_modules match PEP and keep internal lazy submodules tracking internal (#150086) 
Make sys.lazy_modules match PEP and keep internal lazy submodules tracking internal

Co-authored-by: Dino Viehland <dinoviehland@meta.com>
 2026-05-28 17:55:47 -07:00
Neko Asakura
39bd44fc70
gh-148871: make LOAD_COMMON_CONSTANT use immortal stackref borrows (GH-149625) 2026-05-28 12:27:37 +01:00
Serhiy Storchaka
8ab7b43a14
gh-62259: Add support of multi-byte encodings in the XML parser (GH-149860) 
Supported encodings: "cp932", "cp949", "cp950", "Big5","EUC-JP",
"GB2312", "GBK", "johab", and "Shift_JIS".

Partially supported encodings (only BMP characters): "Big5-HKSCS",
"EUC_JIS-2004", "EUC_JISX0213", "Shift_JIS-2004", "Shift_JISX0213",
"utf-8-sig" and non-standard aliases like "UTF8" (without hyphen).

The parser now raises ValueError for known unsupported
multi-byte encodings such us "ISO-2022-JP" or "raw-unicode-escape"
instead of failing later, when encounter non-ASCII data.
 2026-05-26 19:40:25 +00:00
Mark Shannon
a6793662e7
GH-126910: Make _Py_get_machine_stack_pointer return the actual stack pointer (GH-149103) 
* Make _Py_ReachedRecursionLimit inline again
* Remove _Py_MakeRecCheck replacing its use with _Py_ReachedRecursionLimit
* Move the check for C stack swtiching into _Py_CheckRecursiveCall
 2026-05-26 15:14:17 +01:00
Pieter Eendebak
dfeeee990b
gh-145192: improve performance of PySequence_GetSlice (#145193) 2026-05-23 15:45:50 +05:30
Hai Zhu
441af3a934
gh-149335: Avoid JIT trace buffer asserts with overhead above FITNESS_INITIAL (GH-149633) 2026-05-21 15:57:31 +01:00
Pieter Eendebak
f2fa291db8
gh-148871: Add CONSTANT_EMPTY_TUPLE to LOAD_COMMON_CONSTANT (GH-149688) 2026-05-21 15:54:46 +01:00
Pablo Galindo Salgado
1f3c2679f1
gh-149321: Remove lazy_imports=none startup mode (#149389) 2026-05-19 16:01:15 -07:00
Peter Bierma
409fa8e1f3
gh-150027: Avoid copying during construction of frozenset objects (GH-150028) 2026-05-19 13:57:37 -04:00
Jelle Zijlstra
08218030a5
gh-148829: Make sentinels' repr and module customizable (#149654) 
Implementation of python/peps#4968; still needs SC approval.
 2026-05-19 09:18:56 -07:00
Maurycy Pawłowski-Wieroński
a2932e9c95
gh-149464: Add os.pidfd_getfd(pidfd, targetfd, flags=0) function (#149465) 
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
 2026-05-18 16:29:58 +02:00
Petr Viktorin
125f26358a
gh-149685: Use the _Py prefix for private C macros (GH-149686) 2026-05-13 19:14:05 +02:00
scoder
94df62542c
gh-148829: Add PySentinel_CheckExact() (#149725) 2026-05-13 10:10:37 +00:00
Stan Ulbrych
6a0be131c3
gh-149595: Remove the sys._enablelegacywindowsfsencoding() function (#149596) 
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
 2026-05-12 17:11:34 +01:00
Alper
8a4895985f
gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233) 
In free-threaded builds, concurrent calls to PyDict_AddWatcher, PyDict_ClearWatcher, PyDict_Watch, and PyDict_Unwatch can race on the shared callback array and the per-dict watcher tags. This change adds a mutex to serialize watcher registration and removal, atomic operations for tag updates, and atomic acquire/release synchronization for callback dispatch in _PyDict_SendEvent.
 2026-05-11 11:39:55 -04:00
Stan Ulbrych
24b8f12544
gh-149018: Use XML_SetHashSalt16Bytes in pyexpat/_elementtree when possible (#149023) 2026-05-10 18:36:26 +01:00
Neko Asakura
d2d24e46d3
gh-100239: expose sq_repeat helpers for BINARY_OP_EXTEND (#148791) 2026-05-08 11:12:20 +00:00
Neko Asakura
49918f5b0c
gh-149481: skip FOR_ITER inline specialization for Python __next__ (#149491) 
Co-authored-by: Savannah Ostrowski <savannah@python.org>
Co-authored-by: Stan Ulbrych <stan@python.org>
 2026-05-07 23:02:04 +00:00
Hugo van Kemenade
f0daba1652
gh-106693: Revert "Explicitly mark ob_sval as unsigned char to avoid UB (#106826)" (#149514) 2026-05-07 23:39:08 +03:00
Pablo Galindo Salgado
fbba343622
gh-106693: Explicitly mark ob_sval as unsigned char to avoid UB (#106826) 
Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
 2026-05-07 22:06:53 +03:00
Stan Ulbrych
9d07159cda
gh-149499: Fixes for 3.16 bump (GH-149500) 
Also fixes gh-149507, regenerating `configure` for 3.16.

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Zachary Ware <zach@python.org>
 2026-05-07 19:06:37 +00:00
Hugo van Kemenade
f5c75351de Python 3.16.0a0 2026-05-07 19:05:52 +03:00
Hugo van Kemenade
f31a89bb90 Python 3.15.0b1 2026-05-07 16:26:31 +03:00
Neil Schemenauer
13188dbf85
gh-148937: revert process RSS based GC deferral (#149475) 2026-05-07 14:32:14 +03:00
Peter Bierma
2b7c28a440
gh-149101: Implement PEP 788 (GH-149116) 
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Sam Gross <colesbury@gmail.com>
 2026-05-06 17:39:30 -04:00
Alex Malyshev
646853df13
gh-145559: Add PyUnstable_DumpTraceback() and PyUnstable_DumpTracebackThreads() (#148145) 
Co-authored-by: Petr Viktorin <encukou@gmail.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
 2026-05-06 15:01:12 +00:00
Mark Shannon
70bd1c2dd2
GH-143732: SEND specialization (GH-148963) 
* SEND specialization. Adds 2 new specialized instructions:

* SEND_VIRTUAL: for sends to virtual iterators e.g lists and tuples
* SEND_ASYNC_GEN: for sends to async generators

Tweak FOR_ITER_VIRTUAL so that SEND_VIRTUAL and FOR_ITER_VIRTUAL use equivalent guards
 2026-05-05 15:19:16 +01:00
Diego Russo
1e5d94274d
GH-126910: Add GNU backtrace support for unwinding JIT frames (#149104) 
Co-authored-by: Pablo Galindo Salgado <pablogsal@gmail.com>
 2026-05-05 09:29:07 +01:00
Petr Viktorin
508b49845d
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055) 
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
 2026-05-05 09:18:04 +02:00
Pablo Galindo Salgado
8c796782fc
gh-146462: Add dict introspection debug offsets (#148633) 2026-05-04 23:00:23 +00:00
Sergey Miryanov
e89568f0cb
GH-148726: Add heap_size to generational GC (#149195) 2026-05-04 22:14:45 +01:00
Steve Dower
10f950c9bb
gh-148690: Build Windows freethreaded binaries into separate directory and include python3t.dll on GIL-enabled (GH-149218) 
Co-authored-by: Petr Viktorin <encukou@gmail.com>
 2026-05-04 17:45:08 +01:00
Neko Asakura
9846407eaf
gh-143732: add specialization for FOR_ITER (GH-148745) 2026-05-04 17:29:10 +01:00
Victor Stinner
952784af47
gh-137030: Fix YIELD_VALUE bytecode assertion (#149184) 
Co-authored-by: Mark Shannon <mark@hotpy.org>
 2026-05-04 18:09:57 +02:00
Petr Viktorin
6ca5cdba18
gh-149225: Expose Py_CriticalSection in Stable ABI (GH-149227) 2026-05-04 17:32:17 +02:00
Victor Stinner
ce51c18818
gh-146063: Add PyObject_CallFinalizerFromDealloc() to the limited C API (#146172) 
Co-authored-by: Petr Viktorin <encukou@gmail.com>
 2026-05-04 15:37:45 +02:00
Kumar Aditya
5847931d11
gh-143732: allow dict subclasses to be specialized (GH-148128) 2026-05-04 09:39:03 +01:00
sobolevn
726a17e265
gh-149243: Check for recursion limits in CALL_ALLOC_AND_ENTER_INIT (#149310) 2026-05-03 13:26:05 +03:00
Neko Asakura
7c9ad27dd1
gh-148871: extend and improve LOAD_COMMON_CONSTANT (GH-148971) 2026-05-02 19:59:51 +01:00
Brian Schubert
bdedc4a20e
gh-116021: Deprecate support for instantiating abstract AST nodes (#137865) 
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
 2026-05-02 09:50:06 -07:00
Sergey Miryanov
39f123c587
GH-146527: Add get_gc_stats function to _remote_debugging (#148071) 2026-05-02 15:04:18 +00:00
Neko Asakura
2ca6333065
gh-148380: remove all uses of _PyType_LookupByVersion in optimizer_bytecodes.c (GH-148394) 2026-05-02 15:45:38 +01:00
Pablo Galindo Salgado
efcac6f281
gh-149214: Fix non ascii characters in remote debugging (#149228) 2026-05-02 15:07:28 +01:00
Diego Russo
c7b7ca2cd5
GH-126910: Add gdb support for unwinding JIT frames (#146071) 
Co-authored-by: Pablo Galindo Salgado <pablogsal@gmail.com>
 2026-05-02 13:42:03 +00:00
petervanvugt
9668d260a1
gh-148850: Fix memory sanitizer false positive in os.getrandom (GH-148851) 
Co-authored-by: Petr Viktorin <encukou@gmail.com>
 2026-05-01 17:37:36 +02:00
Neko Asakura
0102c1d9b9
gh-149204: add _RROT_3 uop to reduce stack moves (GH-149205) 2026-05-01 12:35:31 +01:00
Petr Viktorin
fcd53b6872
gh-145497: Use same size of static_types array in all builds (GH-149139) 
When someone adds a new type but doesn't increment
`_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES` or
`_Py_MAX_MANAGED_STATIC_EXT_TYPES`, JIT tests fail,
because JIT builds define an extra type.
But the JIT tests don't necessarily run for the commit
that causes the failure.

As a workaround, use the same size for the array for all
builds, potentially with an empty spot.
 2026-05-01 09:41:28 +02:00
Sergey Miryanov
1575a81bf2
GH-148726: Forward-port generational GC. (GH-148746) 
The replaces the incremental GC with a forward port (from 3.13) of the generational GC.

Co-Authored-By: Neil Schemenauer <nas@arctrix.com>
Co-Authored-By: Zanie Blue <contact@zanie.dev>
Co-Authored-By: Sergey Miryanov <sergey.miryanov@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
 2026-04-30 12:19:13 -07:00